energy transfers in everyday appliances

• Everyday electrical appliances are designed to

  bring about energy transfers.
• The amount of energy an appliance transfers depends on

  how long the appliance is switched on for and the power of the appliance.
• Work is done when 


  charge flows in a circuit.
• Electrical energy may be transferred by the appliance in different ways:

  • Kinetic energy for a motor, thermal energy in a kettle
  • Work done is when charge flows through a circuit, and is also equal to energy transferred, as all the electrical energy (ideally) gets transferred to the appliance
  • Power rating of an appliance shows the power it uses in Watts, so greater power rating means it uses more energy